虚幻4文件读写

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匿名技术用户   2021-1-11 21:18   685   0

头文件

// Fill out your copyright notice in the Description page of Project Settings.

#pragma once

#include "CoreMinimal.h"
#include "Kismet/BlueprintFunctionLibrary.h"
#include "MyFileHelper.generated.h"

/**
 * 
 */
UCLASS()
class NEWVERSION_API UMyFileHelper : public UBlueprintFunctionLibrary
{
 GENERATED_BODY()
 
public:
 
 UFUNCTION(BlueprintCallable)
 static void ReadTexFile(const FString& relativePath, FString& outString);

 UFUNCTION(BlueprintCallable)
 static void SaveTexFile(const FString& relativePath, const FString& inString);

};

源文件

// Fill out your copyright notice in the Description page of Project Settings.


#include "MyFileHelper.h"
#include "Runtime/Core/Public/Misc/FileHelper.h"
#include "Runtime/Core/Public/Misc/Paths.h"

void UMyFileHelper::ReadTexFile(const FString& relativePath, FString& outString)
{
 if (relativePath.IsEmpty() == false)
 {
  FString absolutePath = FPaths::ProjectContentDir() + relativePath;
  //absolutePath = absolutePath.Replace(TEXT("/"), TEXT("\\"));
  FFileHelper::LoadFileToString(outString, absolutePath.GetCharArray().GetData());
 }
}

void UMyFileHelper::SaveTexFile(const FString& relativePath, const FString& inString)
{
 if (relativePath.IsEmpty() == false)
 {
  FString absolutePath = FPaths::ProjectContentDir() + relativePath;
  //absolutePath = absolutePath.Replace(TEXT("/"), TEXT("\\"));
  FFileHelper::SaveStringToFile(inString, absolutePath.GetCharArray().GetData());
 }
}

效果:

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